package com.engineering.elink.util.token;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * MD5加密
 */
public class MD5Util {

	public static String getMD5String(String value) {
		try {
			MessageDigest md = MessageDigest.getInstance("md5");
			byte[] e = md.digest(value.getBytes());
			return toHexString(e);
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
			return value;
		}
	}

	public static String getMD5String(byte[] bytes) {
		try {
			MessageDigest md = MessageDigest.getInstance("md5");
			byte[] e = md.digest(bytes);
			return toHexString(e);
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
			return "";
		}
	}

	private static String toHexString(byte bytes[]) {
		StringBuilder hs = new StringBuilder();
		String stmp = "";
		for (int n = 0; n < bytes.length; n++) {
			stmp = Integer.toHexString(bytes[n] & 0xff);
			if (stmp.length() == 1)
				hs.append("0").append(stmp);
			else
				hs.append(stmp);
		}
		return hs.toString();
	}
}
